There is one particular scene in Monstrous Regiment that I love that isn't being talked about enough so I figured...maybe I should talk about it.
'Then go!', shouted Polly. 'Desert! We won't stop you, because I'm sick of your...your bullshit! But you make up your mind, right now, understand? Because when we meet the enemy I don't want to think you're there to stab me in the back!'
The words flew out before she could stop them, and there was no power in the world that could snatch them back.
Tonker went pale, and a certain life drained out of her face like water from a funnel. 'What was that you said?'
The words 'You heard me!' lined up to spring from Polly's tongue, but she hesitated. She told herself: it doesn't have to go this way. You don't have to let a pair of socks do the talking.
'Words that were stupid', she said. 'I'm sorry. I didn't mean it.'
It is such an incredibly powerful scene. I've read the book dozens of times and every time I low-key expect there to be a fight even though I know there won't be because that's how it goes, right? But Pterry is showing us, it doesn't have to. Right here, right now it's in your hands. You can choose not to. You can back down when you are wrong or even when you're right. Polly has good reason to be mad at Tonker but so does Tonker for her actions and Polly chooses not to escalate. They're in this together. Fighting amongst themselves accomplishes nothing and backing down doesn't make her weak. On the contrary, it's a strength because anger is easy. Polly isn't wrong to be angry, but there is a time and a place and she has the wisdom to recognise that this isn't it.
You're allowed to be angry! But you don't have to get swept up by it, you can choose a different path. And hell, that just goes right to the most important thing Discworld taught me. Through Vimes and Granny Weatherwax and Tiffany and occasionally even Rincewind.
Being good isn't something you are, it's something you do. It's something you have to choose to be, over and over again, every single day, every single decision. And it's hard. It's not some nebulous quality you either possess or you don't it's something you have to decide to be and work at hard at all your life but it's up to you. You can always choose to do better, to be kinder, to apologise, to say something, to not say anything, to do the right thing even when it's hard or unpleasant or inconvenient for you. Your anger isn't wrong or misplaced and sometimes being angry is the only right reaction to have, but it's a weapon too and you decide where you aim it.
You don't have to let a pair of socks do the talking.